Aminocarbonylation of (Hetero)aryl Bromides with Ammonia and Amines using a Palladium/DalPhos Catalyst System
作者:Pamela G. Alsabeh、Mark Stradiotto、Helfried Neumann、Matthias Beller
DOI:10.1002/adsc.201200580
日期:2012.11.12
family were examined in a palladium-catalyzed carbonylative amination reaction using inexpensive carbon monoxide and ammonia as reagents. As a result of this survey, the Pyr-DalPhos ligand was identified as being effective for the selective aminocarbonylation of aryl bromides with ammonia, as well as primary and secondary alkylamines. A variety of primary aromatic, heteroaromatic and N-substituted benzamides
使用便宜的一氧化碳和氨气作为试剂,在钯催化的羰基化胺化反应中检查了DalPhos [2-氨基苯基双金刚烷基)膦配体家族的变体。这项调查的结果表明,Pyr-DalPhos配体可有效地用氨以及伯和仲烷基胺对芳基溴化物进行选择性氨基羰基化。以中等至良好的产率形成了各种伯芳族,杂芳族和N-取代的苯甲酰胺。作为这项研究的一部分,制备了(Mor-DalPhos)Pd-苯甲酰基配合物,并进行了晶体学表征,从而显示了羰基插入步骤的可行性。